1. Explain how Ursa Major can be used to locate the Pole star.
1. Explain how Ursa Major can be used to locate the Pole star.
Explanation:
Two stars at the end of Ursa Major can be used to locate the pole star. Imagine traversing these stars in a straight line. The imaginary line should be extended northward. The distance between two stars is about five times this line. A star known as the Pole star can be seen in this direction.
2. For what reason is the distance between stars communicated in light years? When you say that a star is eight light years away from Earth, what do you mean?
2. For what reason is the distance between stars communicated in light years? When you say that a star is eight light years away from Earth, what do you mean?
Explanation:
Because the stars are so far away from Earth, expressing these distances in kilometers is inconvenient. As a result, the unit of measurement for such vast distances is the light year. If a star is eight light years away from Earth, then its light will reach Earth in eight years.
3. Show how the given stars looks in real sky by a clear image.
(i)Orion
(ii)Ursa major
3. Show how the given stars looks in real sky by a clear image.
(i)Orion
(ii)Ursa major
Explanation:
(i)Orion
(ii)Ursa major
4. Draw a neat labelled diagram of solar system.
4. Draw a neat labelled diagram of solar system.
Explanation:
5. Are all of the stars moving in the sky? Explain.
5. Are all of the stars moving in the sky? Explain.
Explanation:
No, none of the stars move in the night sky. Stars appear to move in the sky because the Earth rotates on its own axis.Earth's axis rotation gives the illusion that stars in the sky are moving. From west to east, the Earth moves. As a result, it appears as though the stars are rising in the
west and going down in the west as the day begins. Thus, stars are comparatively moving in relation to Earth's motion.
6. What exactly are constellations? Any two constellations, please.
6. What exactly are constellations? Any two constellations, please.
Explanation:
A constellation is a collection of stars with a distinct shape.
Example: Orion, Ursa Major.
7. Define full moon day?
7. Define full moon day?
Explanation:
The full moon day is the day when the entire moon's disc can be seen.
8. On the moon, can sound be heard?
8. On the moon, can sound be heard?
Explanation:
There is no medium through which sound can travel on the moon, so we cannot hear it.
9. Is the earth a solar system satellite?
9. Is the earth a solar system satellite?
Explanation:
No, the earth is not a satellite of the sun, despite the fact that it revolves around the sun; satellites revolve around the planets.
10. Which meteor showers are they?
10. Which meteor showers are they?
Explanation:
At the point when the earth crosses the tail of the comet, multitudes of meteors are seen, known as meteor showers.
11. Why is the Sun considered a star?
11. Why is the Sun considered a star?
Explanation:
The Sun is a star since it consistently transmits light and intensity. Because it is closer to Earth than other stars, it appears to be larger.
12. What are space rocks ?
12. What are space rocks ?
Explanation:
They are tiny planets made of metal and rock that orbit the Sun, mostly between Mars and Jupiter.
13. Define meteorite ?
13. Define meteorite ?
Explanation:
Meteorite refers to a portion of a meteor that reaches Earth's surface but does not enter the atmosphere.
14. Name the astronauts who made the 1969 lunar landing.
14. Name the astronauts who made the 1969 lunar landing.
Explanation:
Neil Armstrong (1930-2012) and Edwin "Buzz" Aldrin (1930-) of the United States became the first humans to land on the moon on July 20, 1969. Armstrong became the first person to walk on the moon for six and a half hours.
15. How is the comet's tail formed?
15. How is the comet's tail formed?
Explanation:
Some of the ice on a comet turns into gas when it gets close to the sun. After it has broken free of the ice, gas and loose dust form a long, glowing tail behind it.
16. Despite being further from the Sun, Venus is hotter than mercury. Why ?
16. Despite being further from the Sun, Venus is hotter than mercury. Why ?
Explanation:
Venus has a greater proportion of carbon dioxide. As a result, the greenhouse effect is primarily caused by the sun's infrared rays being captured.
17. Differentiate equator plane and orbital plane of the earth.
17. Differentiate equator plane and orbital plane of the earth.
Explanation:
The equator's plane is the equational plane. The plane in which the earth revolves around the sun is called the orbital plane.
18. Name the planets that are habitable. Why are they referred to as this?
18. Name the planets that are habitable. Why are they referred to as this?
Explanation:
Mars, Venus, Earth, and Mercury Because of their similar rocky structures to Earth, they are referred to as habitable planets.
19. Who is the universe? Name two distinct categories of celestial bodies found throughout the universe.
19. Who is the universe? Name two distinct categories of celestial bodies found throughout the universe.
Explanation:
The vast, unfathomable space that includes the majority of distant stars, planets, etc., is referred to as the universe, and its heavenly bodies are meteors and comets.
20. How can the star Sirius be located?
20. How can the star Sirius be located?
Explanation:
Orion is close to the star Sirius, which is the brightest star in the sky. Imagine that the three middle stars are traversed in a straight line. Take a look to the east along this line. You will arrive at the Sirius via this line.
21. what exactly is Orian?
21. what exactly is Orian?
Explanation:
Seven or eight bright stars make up the winter constellation of Orion. It is likewise called the tracker as the three center stars address the belt of the tracker. It appears as though the four bright stars are arranged in the shape of a quadrilateral.
22. Describe the role that artificial satellites play in the transmission of television shows to large areas.
22. Describe the role that artificial satellites play in the transmission of television shows to large areas.
Explanation:
Electrical signals are first created from the to-be-transmitted image and sound. After that, a special kind of wave is made from these electrical signals and sent through the air using an antenna. The counterfeit satellites have unique instruments which get the signs communicated by the earth stations. The artificial satellite then amplifies and retransmits the received signals to the televisions in various locations.
23. Give justifications for why life can only exist on Earth.
23. Give justifications for why life can only exist on Earth.
Explanation:
● Because it is just far enough from the sun, Earth is the only planet where life exists.
● It is at a temperature that is suitable for living things.
● water's presence on Earth.
● atmosphere around the earth that is suitable.
● It has a sweeping of ozone.
24. Name the Planets of Jupiter. Give a general description of their traits.
24. Name the Planets of Jupiter. Give a general description of their traits.
Explanation:
Jovian planets include Neptune, Uranus, Saturn, and Jupiter. They are mostly gaseous, which is one of their general characteristics.
● The outer planets have a lot of mass and are very big.
● They are surrounded by a ring system.
● There are a lot of moons in their system.
25. The distance between stars is expressed in light years for what reason? When you say that a star is eight light years away from Earth, what do you mean?
25. The distance between stars is expressed in light years for what reason? When you say that a star is eight light years away from Earth, what do you mean?
Explanation:
Since many astronomical objects, like stars and galaxies, are extremely far from Earth, expressing their distances in kilometers is inconvenient.
The distance traveled by light in a year is equal to one light-year, which is a large unit. As a result, light-years are used to represent the vast distances.
If a star is eight light-years away from Earth, then the distance between the star and Earth is equal to the distance that light would travel in eight years.
Therefore, the distance between the earth and the star is 7.6 ×1013 km, or 8.46 ×1012.
